What are some examples of type hinting in Python?

What are some examples of type hinting in Python?

Type hinting in Python allows you to specify the expected data types of variables, function parameters, and return values. For example:

def greet(name: str) -> str:
    return f'Hello, {name}!'

This function indicates that name should be a string and it returns a string.

Can you show me more complex examples?

Sure! Here's a more complex example using lists and dictionaries:

from typing import List, Dict

def get_student_scores() -> Dict[str, List[int]]:
    return {'Alice': [90, 85, 88], 'Bob': [78, 82, 80]}

This function returns a dictionary where the keys are strings (student names) and the values are lists of integers (scores).

What about using type hinting with classes?

Absolutely! Here's an example with a class:

class Employee:
    def __init__(self, name: str, age: int) -> None:
        self.name = name
        self.age = age

    def get_info(self) -> str:
        return f'Employee: {self.name}, Age: {self.age}'

In this class, the constructor specifies that name is a string and age is an integer.

Are there any benefits to using type hinting?

Yes, type hinting improves code readability, helps with debugging, and allows for better integration with IDEs that can provide type checking and autocompletion.